| absolute magnitude | | |
| n. | 1. absolute magnitude | (astronomy) the magnitude that a star would have if it were viewed from a distance of 10 parsecs (32.62 light years) from the earth. |
| ~ magnitude | the property of relative size or extent (whether large or small).; "they tried to predict the magnitude of the explosion"; "about the magnitude of a small pea" |
| ~ astronomy, uranology | the branch of physics that studies celestial bodies and the universe as a whole. |
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